Covering to retain cushion and mattress springs and the like



W. KIWI Aug. 20, 1929.

COVERING TO RETAIN CUSHION AND MATTRESS SPRINGS AND THE LIKE 2 Sheets-Sheet 1 Filed 001;. 28, 1927 I II AM akier Aug. 20, 1929. w, w 1,725,282

COVERING TO RETAIN CUSHION AND MATTRESS srxmss AND THE LIKE Filed Oct. 28, 1927 2 Sheets-Sheet 2 INVENTOR:

BY ATTORNEY.

Patented Aug. 20, 1929.

UNITED STATES WALTER KIWI, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 PEERLESS SPRINGS,

PATENT OFFICE.

INC., OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

COVERING TO RETAIN CUSHION AND MATTRESS SPRINGS AND THE LIKE.

Application filed October 28, 1927. Serial No. 229,333.

This invention relates to covered spring structures where coiled springs are placed side by side to form a mattress, cushion seat or the like.

The leading object of the present invention is to provide an article ofthe character stated of novel construction and of such simple form that it may be readily and economically made to meet commercial requirements.

A further object of the present invention is to provide an article of the character stated in which standard machinery may be employed in its manufacture, thus obviating loss of time and added expense which would be entailed'in the design and manufacture of special machinery.

A further object of the present invention resides in the provision of a novel form of tube-like unit of flexible material, as muslin, which is progressively fashioned from a flat strip into tube form and subsequently provided with spring receiving pockets and with spring inserting openings between adjacent pockets.

Other and further objects reside in the provision of general details of construction and in'the arrangement and combination of parts for attaining the results sought by the foregoing objects.

The invention consists of the novel construction hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which:

Fig. 1, is a fragmentary view in plan of a blank of muslin used in the formation of my tube-like spring covering, the dash line indicating the line of folding.

Fig. 2, is a fragmentary view in plan showing the blank folded and stitched.

Fig. 3, is a similar view illustrating the folded and stitched blank after presentation to a stapling operation.

4, is a similar view illustrating the folded, stitched, and stapled blank after presentation to a stamping machine for the cutting away of certain of the blank structure.

Fig. 5, is a top or plan view of a portion of a tube-like unit illustrating coiled springs introduced therein to form the completed covered spring structure.

Fig. 6, is a view in section taken upon the line 66 of Fig. 5.

Fig. 7, is a view in section taken upon the line 7-7 of Fig. 5.

Fig. 8, is a view in plan illustrating a modified arrangement of tube formation; and

Fig. 9, is a view in cross section of Fig. 8.

For the purpose of illustrating my inven tion I have shown in the accompanying drawings two forms thereof which are at present preferred by me, since the same have been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

Briefly stated, the steps of forming my novel tube-like unit and spring insertion may be described as follows:

The first operation is that of taking a piece of muslin or the like of desired width and folding the same in the middle and stitching the free edges. The tubular 'member thus formed is advanced to a stapling machine where staples are inserted centrally of the tubular member at required distances apart. The stapled tubular member is then advanced to a third machine where around the stapled parts ears are cut, and at the same time, opposite the stapled ears as out, are out other openings to permit the introduction of the coiled springs. The tubular member thus formed is opened up and the springs are compressed and inserted through the openings in the side of the tube so that the spiral springs are fitted between the stapled .tongues previously 7 described.

7 Referring now to the drawings in detail, the-reference numeral 1, represents a piece of textile fabric as muslin, the length of which is immaterial and depends upon the number of springs to be used. This material constitutes a blank and is adapted to be folded upon itself longitudinally upon the dash line 2, and constitutes the first steps of my invention. This position is shown in Fig. 2, and the meeting longitudinal edges are secured together by stitches 3 by means of any conventional design of sewing machine. There is thus provided a tube-like member 4, the formation of which constitutes the second step of my invention. The third step of my invention consists in introducing the tube disclosed in Fig. 2, to a stapling machine. Staples 5 are caused to be applied at regular intervals throughout the length of the tube and pass through both layers of the tube material. Fig. 3 shows the tube 4: with staples applied. The tube t is now introduced to a stamping machine for the cutting of certain parts of the tube. Thus, upon both upper and lower layers of the tube there is made a number of U-s'haped cuts 6 equal in number to the number of staples. Each U-shaped slit 6 substantially surrounds a staple 5 and provides opposed pairs of tongues 7. The tongues as connected by the staples form partitions for separating the springs. At the same time the U-shaped slits 6 are formed, openings 8 are cut for the insertion of springs 9. With the tube 4 in expanded position, as shown in Figs. 5 and 6, the tongues are .vertically disposed, see Fig. 6. These partitions, it is noted, are quite narrow and being cut from the tube material require no additional fabric which forms very economical andeasily assembled partitions which serve to prevent the springs from striking one against the other. The springs are first compressed and inserted through the openings 8 into a tube 4 and are self-seating within compartments 10 upon release. This position is clearly shown in Fig. 6, there being an opening 8 for each compartment.

Fastening rings 11 are now applied to secure'adjacent springs together and in this connection it may be stated that the tube is held in proper place by these rings.

Referring now to Figs. 8 and 9, I make use of a modified form of tube. Instead of a single piece of fabric I use two pieces designated 10 and 11, which I introduce in superimposed fashion to a sewing machine for the stitching of the meeting longitudinal edges. The stitches are designated 12. The tube, thus formed, undergoes all of the previously described operations illustration of which is unnecessary since the only change is to make a tube of two pieces of material instead of one piece.

It will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enumerated as desirable in the statement of the invention and the above description, and while I have in the present instance shown and described the preferred embodiments thereof which have been found in practice to give satisfactory and reliable results, it is to be understood that the same are susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

l/Vhat I claim is:

1. The manner of forming a tube-like covering of the character stated which con sists in taking a length of textile fabric, arranging the same length-wise to provide a double thickness and stitching together the free longitudinal edges, stapling together at regular intervals the two thicknesses of material, cutting tongues from said tube material adjacent said staples so as to include a staple in each pair of tongues to provide spaced partitions, and cutting openings in said tube wall for the insertion of a spring in each compartment as formed between adjacent partitions. I

2. As an article of manufacture, a double wall strip of flexible material joined at its longitudinal edges to form a spring retaining tube, spaced means connecting the walls between the connected longitudinal edges thereof to divide said tube into pockets, and said connected walls having an opening for each pocket extending inwardly from one longitudinal edge thereof.

3. A spring retaining strip comprising, a tube of flexible material, integral tongues struck from the material of one side wall to extend transversely through said tube, means connecting the free ends of said tongues to the material of the opposite sidewall, and said tube having an opening to one side of each integrally formed tongue for the insertion of springs into said tube between said tongues. I

1-. A spring retaining strip comprising, a tube of flexible material, integral tongues struck from opposite wallsof said tube to extend transversely through said tube, means connecting the free ends of said tongues to the material of the opposite sidewall, and said tube having an opening to one side of each integrally formed tongue for the insertion of springs into said tube between said tongues.

WALTER KIWI. 

